The speakers have 60w each with tweeters attached, the subwoofer was from an home 5.1 cinema kit i believe.

Step 1: The Case

I made the case from two empty speaker shells, in one speaker case i close all the original holes and made one new hole for the subwoofer, for the other speaker case i cut it in two, it is going to be the top part of the case where the display, electronics and tweeters are located.

Just need to glue them in place.

Step 2: Front Panel

I painted the part that i want to cut using the top part of the case as a template, mark the holes to drill for the amplifier and cut a rectangule with the same measures of the mp3 module.

Mark the holes for the tweeters, find the middle and cut a circle of wood for each one.

Step 3: Subwoofer Compartment

Put the subwoofer in place and flip the case, put a small piece of wood on the subwoofer to avoid the speaker to touch the wood.

Cut a piece of wood to place inside the box, it should be a nearly perfect fit to avoid gaps, cut four pieces of wood to creat a framme around the new divisory.

Step 4: Final Shape

Using small pieces of wood mark and glue them to keep the amplifier and the front panel in place, also glue the top part to the main part of the speaker.

Step 5: Speaker Holes

Drill a hole for the subwoofer vent, and glue a piece of cilindrical cardbord, for the front measure each speaker and cut the holes, in my case i´m using diferent sizes speakers with the same voltage.

Just need to had two pieces of pre-cuted plywood to form the cabinets(small)

Step 6: Final Touches

Painting using a water based mate black, very easy to apply and very fast dry, hot glue the tweeters and mark the grill mesh to bend half a centimeter to 90º in alll the four corners, using two pieces of wood its easy to hammer the metal to the desired shape.

Step 7: Put It Together

Its almost done, solder everything using the schematic, all the exposed solders wires must be heat srinked with srink tube, the main components are: